Both men are wearing backpacks. Suspect 1 was carrying his bulky backpack on both shoulders and Suspect 2 had his slung over one shoulder.

FBI

BOSTON - On the day of the Boston marathon bombings, Suspect 2, Dzhokhar A. Tsarnaev, tweeted a quote from rapper Jay-Z at 8:04 p.m. that said, "Ain't no love in the heart of the city, stay safe people."

Tsarnaev has been on the run since his brother, Tamerlan Tsarnaev, was killed in a shootout with police around 1 a.m. ET on Friday. Authorities believe the brothers are the men identified by the FBI as Suspect 1and Suspect 2 in the deadly bombing.

Two friends of Dzhokhar A. Tsarnaev told CNN that Dzhokhar's Twitter account was @J_tsar. The account has the name Jahar, which some reports say friends called Dzhokhar because his first name was so hard to pronounce.

The account profile only says, Salam aleikum, which is an Arabic greeting that means, peace, hello and/or welcome.

The most recent tweet on the account is a retweet on Wednesday from Mufti Ismail Menk, who identifies himself as a Muslim scholar.

"Attitude can take away your beauty no matter how good looking you are or it could enhance your beauty, making you adorable," the tweet reads.

Tsarnaev's tweets this week include one at 1:43 a.m. Wednesday that said, "I'm a stress free kind of guy."

On Tuesday shortly after midnight he tweeted, "There are people that know the truth but stay silent & there are people that speak the truth but we don't hear them cuz they're the minority."

Another tweet from Tsarnaev on Tuesday was a quote from rapper Eminem: "Nowadays everybody wanna talk like they got somethin to say but nothin comes out when they move their lips; just a bunch of gibberish."

After another Twitter account posted a photo on Tuesday saying it showed a man who was going to propose to his girlfriend at the marathon in Boston but instead found her dead, Tsarnaev tweeted a two-word response: "fake story."

Another of Tsarnaev's tweets from Tuesday reads, "So then I says to him, I says, relax bro my beard is not loaded."